Larch House Old Knebworth Lane Knebworth Hertfordshire SG3 6FS

1. 2 Mar 2026

   Received by North Hertfordshire

2. 28 Apr 2026

   Decision issued: Conditional Permission

3. 9 Aug 2026

   Added to PlanIndex

The council has decided this application; the published outcome sits in the record above and the decision notice on the council portal carries the detail, including any conditions.

If permission was granted, work must normally begin within three years of the decision. If it was refused, the applicant can appeal within the statutory time limit or submit a revised scheme.

Householder applications cover work to an existing house and its garden: extensions, loft and garage conversions, porches, outbuildings and similar alterations within the boundary of the home. They cannot be used to create a separate dwelling or change what the building is used for. Councils aim to decide them within eight weeks, and immediate neighbours are usually notified and given a chance to comment.

More on householder applications in our guide

• Larch House Old Knebworth Lane Knebworth Hertfordshire SG3 6FS

  26/00817/FPH Submitted 27 Mar 2026 0m away

  Insertion of front bay window following removal of existing garage doors to facilitate garage conversion into habitable accommodation. Front entrance porch and installation of side canopy. Insertion of rooflights to existing rear element roofslope. Alterations to fenestration. Erection of boundary wall/railings and installation of entrance gates.

  Decided Householder Extension Loft or dormer +1 12 docs
  Small domestic

• 190 Park Lane Old Knebworth Knebworth Hertfordshire SG3 6PS

  22/01738/FPH Submitted 17 Aug 2022 168m away

  Single storey rear extension to facilitate 1-bed annexe accommodation following demolition of existing outbuilding

  Refused Householder Extension Demolition 10 docs
  Small domestic

• 190 Park Lane Old Knebworth Knebworth Hertfordshire SG3 6PS

  22/02172/LBC Submitted 17 Aug 2022 168m away

  Single storey rear extension to facilitate 1-bed annexe accommodation following demolition of existing outbuilding

  Refused Heritage and listed buildings Extension Demolition 11 docs
  Small domestic

• 207 Park Lane Old Knebworth Knebworth Hertfordshire SG3 6PR

  21/01307/LDCP Submitted 22 Apr 2021 212m away

  Hipped roof to a gabled roof and insertion of dormer to existing rear elevation roofslope

  Granted Lawful development Loft or dormer 5 docs

• 195 Park Lane Old Knebworth Knebworth Hertfordshire SG3 6PR

  22/03197/FPH Submitted 12 Dec 2022 258m away

  Part single storey part two storey rear extension. Ground floor side door.

  Decided Householder Extension
  Small domestic

• Manor Gardens Cottage Park Lane Old Knebworth Knebworth Hertfordshire SG3 6QB

  24/01232/LBC Submitted 20 Aug 2024 305m away

  Replace 4no. timber windows (2no. front dormer windows, 1no. rear dormer window and 1no. first floor window on side elevation) with 12mm slimline double-glazed timber windows (as amended by drawing of Window 4 received by email on 17/12/2024).

  Granted Heritage and listed buildings Loft or dormer Windows or glazing 8 docs

• 26/00371/FPH Decided

  12 Dale Close Hitchin Hertfordshire SG4 9AS

  Replacement raised hipped roof and insertion of front rooflight and two rear dormers to facilitate loft conversion into habitable accommodation. Two storey and part single storey side and rear extensions and front porch following demolition of existing side and rear extensions. Alterations to fenestration to include insertion of first floor side window. External cladding and Installation of rear raised patio and steps.

  10 Feb 2026 Householder
• 26/00904/FPH Decided

  4 Leete Place Royston Hertfordshire SG8 5DX

  Single storey side and rear extension, open-sided front porch, replacement roof including installation of rooflights, removal of chimney and alterations to existing fenestration following demolition of existing store. Installation of vehicular access via dropped kerb and vehicle crossover including hardstanding to provide No.2 parking spaces.

  22 Apr 2026 Householder
• 26/01380/FPH Decided

  15 Ninesprings Way Hitchin Hertfordshire SG4 9NQ

  Part two storey and part single storey side extension and single storey rear extension following demolition of existing side element and rear conservatory. Front porch, alterations to fenestration and hard and soft landscaping works. External cladding and rendering.

  5 Jun 2026 Householder
• 26/01414/FPH Decided

  80 Willian Road Hitchin Hertfordshire SG4 0LT

  Replacement raised roof to facilitate additional accommodation at first floor level. Two storey rear extension following removal of existing shed. Alterations to fenestration and external render. Installation of front hardstanding and provision of two parking spaces.

  1 Jun 2026 Householder
• 26/01062/FPH Decided

  47 Common Rise Hitchin Hertfordshire SG4 0HN

  Two storey and part single storey rear extension following demolition of existing rear element.

  22 May 2026 Householder